Radial head-gate.



K11. THORSBY. KA DIAL HEAD em. APPLICATION HLED DEC. l9. I916.

Patented Aug. 13, 1918! 2 SHEETS-SHEET l- WITNESS By 160/! v ATTORNEYS.

a: m.rnoro-urno..wunmumu. n. a

' K. 1.- monsav. V RADIAL HEAD GATE.

APPLICATION FILED DEC- 19. 916.

' Patented Aug. 13, 1918.

2 SHEETS-SHEET 2.

vIN VEN TOR.

A TTORNEYS.

ml lhlirl rrrllu m. rnmuvum nunmamn. n a

UNITED strarns PATENT air me,

KARL J CHAN 'THORSBY, OF OAKLAND, CALIFORNIA ASSIGNOR"TO CALIFORNIAconaoenrnn CULVERT COMPANY, or OAKLAND, CALIFORNIA, abosrona Tron orCALIFORNIA.

RADIAL" HEAnGATE.

Specification of Letters fatent. Patented Aug. '13 1918;

Application filed December 19, 1916. Serial No. 137,918.

I To all whom it may mm.-

Be it known-that I, KARL JOHAN THORSBY, a subject of the King of Norway,residing at Oakland, in'the county of Alameda and State of-California,have invented certain new and useful Improvements in Radial Head-Gates,ofwhich the following is a specification. e

. My invention relates to the class of head or control gates for canals,ditches and flumes, and more particularly to the type of radial gates. I

The object of the invention is to provide a gate of the described typewhich is light .in weight, and therefore cheap to manufacture and easyto install and operate, and which, at-the same time, is sufficientlystrong to be durable under continuous use.

With this object in view, my invention consists in the novelconstruction hereinafter described with reference to the accompanyingsheets of drawings, wherein t Figure 1 is a front elevation ofv my gate,part of the face thereof being broken away Fig. 2 is a sectional planview of the gate and its pier, taken in the direction ,of the.

arrows on the line 22 of Fig.3.

Fig. 3 is a sectional end elevation taken in the direction of the arrowson the line 3'3 of Fig.2. Y

Fig. 1 is a sectional detail of one of the pivot pins and the mountingtherefor.

Fig. 5 is a perspective detail of one of the adjustable supportingbrackets for the end frames.

Fig. 6 is a perspective detail of the pivotpin-block upon which thebracket shown in Fig. 5 is mounted.

In the drawings, the reference numerals 1 and 2, designate respectively,the bottom and the side walls of the pier or portion of the flume withinwhich the gate operates, said pier being preferably constructed ofconcrete. The gate proper comprises a radial frame-work, presently to bedescribed,

. which is pivoted, in a horizontal plane, at

its clown-stream side upon pins 3 mounted in the side pier walls 2,which frame carries a face member 41, formed as a segment of a cylinderwhose axis is the line of the pivot 3;

The face 1 is constructed of corrugated sheet metal, as illustrated,such construction providing the greatest strength, to resist thepressure of the water, with the least weight of, material. Thereinforcing corrugations best lie'in vertical planes, that is from topto bottom or transverse of the face, as. this disposition, being in thewidth of the face, givesto it the greatest rigidity. The frame of thegate comprises spaced horizontally disposed members 5, preferably ofangle section, to which the. face 4 is sccured in any desired manner,and radially disposed end members 6, extending from said horizontalmembers toward the pivots. Diagonal braces 7 are provided to support thehorizontal members being the end mem ,bers, said diagonal braces beingconnected byhorizontal tie bars 8. Vertically disposed chord members 9,extending between the outer ends of the alined upper and lower endmembers 6 and diagonal braces 7, prevent the separation of said outerends and the, flattening or buckling of the face.

The inner ends of the end members 6 and p the braces 7 ofeach end of theframe conpivot-1')in-blocks-' 12, Figs. 3, 4 and 6. The

edges of said blocks are formed withflange's 13, which engage beveledfaces14= in the sides of the bracket apertured-members'11, and therebyhold said blocks ,within said members. The blocks 12 are providedwithholes 15, to receive the inner ends of the pivot pins 3, the ends ofsaid pins lying within socketmembers l6 secured to the pier walls 2, oras shown in Fig. 2, embedded in said walls.

Said blocks 12 are further provided, on

their inner faces, with lugs 17 throughwhich is passed a retaining pin18, lying 95 over the end of the pivot pin 3 and retaining the same inposition as shown in Fig. 1. The blocks 12 are adjustable, radially,

within the apertured members 11 of the- I socket members 10, and.set'screws 19, Fig. 100

3 are provided in said brackets, for clamping said blocks against shims20. The sides V 2 of the pier have segmental arcuate guide flanges 21,Figs. 2 and 3, preferably formed of angle members embedded in theconcrete, 105

against which lie, in close relation, the overlapping ends 22, Fig. 2,of the face 4:. The

position of the face 4L relative to'said guide flanges 21 is adjusted bymeans of the shims 20 and the set screws19, the entire gate 110 beingshifted radially with respect to its pivot pins 3. A comparatively tightjoint can thus be made between theends 31-2 of the face and the guideflanges 21, without rendering the gate inoperative through excessivefriction. This joint is made possible by the fact of the corrugations ofthe face running vertically so that the ends 22 may be flat and seataccurately on'the flat guide flanges 21 For raising and lowering thegate, I have shown a windlass 23, Figs. 1 and 3, mounted upon a bridge 2t extending across the pier over the'gate, said Windlass having a cable25 wound uponits drum and attached to the gate face at 26.

It will be readily understood that on account of the peculiarconstruction of my gate, involving the use of a stiff but exceedinglylight corrugated face supported upon a light skeleton frame, I amenabled to make a very much lighter and consequently less expensive gatethan any now known to the art, and moreover that the installation ofsuch a gate will be less expensive and its operation easier, than is thecase with the heavier'types in present use.

I claim 1. A head-gate of the radial type comprising a face formed as asegment of a cylinder; a skeleton frame for carrying said facecomprising radially disposed end members; a supporting bracket to whichthe inner ends of the radial members of each end are connected; .a pivotblock carried by each bracket and adjustable radially thereof; and ameans for pivotally supporting said blocks in the axis of said face.

2. A head-gate of the radial type comprising a face formed as a segmentofa cylinder; a skeleton frame for carrying said face comprisingradially disposed end members; a supporting bracket to which the rinnercends of the radial members of each end are connected; a pivot blockcarried by each bracket and adjustable radially thereof; a fixed socketmember mounted adjacent to each block; a pivot pin passing through saidblock and into said socket member and lying in'the axis of said face; apair of lugs projecting outwardly from the exposed face of saidblock;and a removable retaining pin passing through said lugs and preventingits outward removal; and

a pin pivota-lly connecting said block-and;

said socket member in the axis of said face. In testimony whereof I havesigned my name to this specification :in the presence of' twosubscribing witnesses.

KARL J OHAN THORSBY.

' IVitnesses:

IV. E. CooHRAN, E. H. WmBEN.

Ccpies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washin gtoli, D. '0.

